US20220018700A1 - Filter pan oil level sensor - Google Patents
Filter pan oil level sensor Download PDFInfo
- Publication number
- US20220018700A1 US20220018700A1 US17/478,549 US202117478549A US2022018700A1 US 20220018700 A1 US20220018700 A1 US 20220018700A1 US 202117478549 A US202117478549 A US 202117478549A US 2022018700 A1 US2022018700 A1 US 2022018700A1
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- Prior art keywords
- filter pan
- oil
- pan
- lever
- load cell
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000000034 method Methods 0.000 claims description 8
- 230000000881 depressing effect Effects 0.000 claims description 2
- 238000010411 cooking Methods 0.000 abstract description 20
- 239000003921 oil Substances 0.000 description 42
- 238000001914 filtration Methods 0.000 description 8
- 239000008162 cooking oil Substances 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 230000007246 mechanism Effects 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 230000000712 assembly Effects 0.000 description 2
- 238000000429 assembly Methods 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 230000001351 cycling effect Effects 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 230000003134 recirculating effect Effects 0.000 description 1
- 230000000284 resting effect Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 239000010913 used oil Substances 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F23/00—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm
- G01F23/20—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measurement of weight, e.g. to determine the level of stored liquefied gas
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01G—WEIGHING
- G01G17/00—Apparatus for or methods of weighing material of special form or property
- G01G17/04—Apparatus for or methods of weighing material of special form or property for weighing fluids, e.g. gases, pastes
- G01G17/06—Apparatus for or methods of weighing material of special form or property for weighing fluids, e.g. gases, pastes having means for controlling the supply or discharge
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47J—KITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
- A47J37/00—Baking; Roasting; Grilling; Frying
- A47J37/12—Deep fat fryers, e.g. for frying fish or chips
- A47J37/1223—Deep fat fryers, e.g. for frying fish or chips with means for filtering the frying liquid
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47J—KITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
- A47J37/00—Baking; Roasting; Grilling; Frying
- A47J37/12—Deep fat fryers, e.g. for frying fish or chips
- A47J37/1271—Accessories
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47J—KITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
- A47J37/00—Baking; Roasting; Grilling; Frying
- A47J37/12—Deep fat fryers, e.g. for frying fish or chips
- A47J37/1276—Constructional details
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01G—WEIGHING
- G01G19/00—Weighing apparatus or methods adapted for special purposes not provided for in the preceding groups
- G01G19/52—Weighing apparatus combined with other objects, e.g. furniture
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01G—WEIGHING
- G01G21/00—Details of weighing apparatus
- G01G21/22—Weigh pans or other weighing receptacles; Weighing platforms
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47J—KITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
- A47J2203/00—Devices having filling level indicating means
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47J—KITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
- A47J37/00—Baking; Roasting; Grilling; Frying
- A47J37/12—Deep fat fryers, e.g. for frying fish or chips
- A47J37/1266—Control devices, e.g. to control temperature, level or quality of the frying liquid
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01G—WEIGHING
- G01G19/00—Weighing apparatus or methods adapted for special purposes not provided for in the preceding groups
- G01G19/40—Weighing apparatus or methods adapted for special purposes not provided for in the preceding groups with provisions for indicating, recording, or computing price or other quantities dependent on the weight
- G01G19/413—Weighing apparatus or methods adapted for special purposes not provided for in the preceding groups with provisions for indicating, recording, or computing price or other quantities dependent on the weight using electromechanical or electronic computing means
- G01G19/414—Weighing apparatus or methods adapted for special purposes not provided for in the preceding groups with provisions for indicating, recording, or computing price or other quantities dependent on the weight using electromechanical or electronic computing means using electronic computing means only
- G01G19/4142—Weighing apparatus or methods adapted for special purposes not provided for in the preceding groups with provisions for indicating, recording, or computing price or other quantities dependent on the weight using electromechanical or electronic computing means using electronic computing means only for controlling activation of safety devices, e.g. airbag systems
Definitions
- the apparatus disclosed herein is directed to the technical field of fryers for cooking food and related cooking apparatuses. More particularly, the invention is directed to an apparatus and method for determining the oil level in a filter pan.
- the invention is directed to an apparatus for measuring an amount of oil present in a filter pan pivotable about a first end of the pan, wherein the apparatus has a fulcrum affixed to a frame and a load cell affixed to the frame, and a lever pivotable about the fulcrum, having a first end and a second end, wherein the first end of the lever supports a second end of the oil filter pan, and the second end of the lever urges against the load cell.
- the invention is directed to a method for measuring an amount of oil in a filter pan having the steps of gathering the amount of oil in the filter pan such that the filter pan tilts downward on a first side; depressing a first end of a lever that engages the first side of the filter pan; urging a second end of the lever against a load cell to obtain a reading; and notifying a user the filter pan is full, based on the reading of the load cell.
- FIG. 1 depicts a cooking unit assembly and associated control assembly.
- FIGS. 2A and 2B depict perspectives of a frame including a filter pan.
- FIG. 3 depicts a perspective view of a filter pan with an inset view of a shoe attached to the filter pan.
- FIGS. 4A and 4B depict an alternative embodiment of a filter pan and frame.
- FIG. 5 depicts a profile view of a load cell and assembly.
- FIG. 1 depicts a front view of a cooking unit assembly 10 of fryers having a filter pan 24 and filtration assembly 20 .
- Cooking units including but not limited to fryers, often have oil filtration systems or assemblies for re-using cooking oil that could support an oil level sensor of the type described herein. Accordingly, the oil filter sensor mechanism as disclosed herein is not limited to fryers specifically or to cooking products generally. Nevertheless, for purposes of providing a specific utility environment, the apparatus is described with respect to fryers.
- the assembly 10 has a frame 18 .
- the frame 18 provides the frying basins that contain oil and also supports the fryers as wells as related electrical, mechanical, and fluid assemblies. As shown in FIG. 1 , the frame 18 supports a bank of fryer baskets 12 suspended over basins maintained within a rack 14 mounted to the top of the frame 14 . Other elements may be included for operating or ventilating the fryers, such as a control system 16 or a hood above the fryers (not shown).
- the frame 18 also supports a filtration assembly 20 as further described herein.
- FIGS. 2A and 2B show different perspectives of an embodiment of the frame 18 with the various electrical wires and fluid hoses removed for ease of viewing.
- the frame 18 as depicted in FIGS. 2A and 2B is mounted on casters for ease in moving the cooking unit assembly 10 to a desired location.
- a filter pump 22 is provided for pumping the oil through the filtration assembly.
- a filter pan 24 is shown at the bottom of the frame 18 . In the embodiment shown in FIGS. 2A and 2B , the filter pan 24 is set on its own front casters 28 and rear casters 30 .
- To the rear of the filter pan 24 is a brace 60 , below which is the sensor assembly 50 as described more fully herein.
- FIG. 3 depicts the filter pan 24 in isolation.
- the filter pan 24 in this embodiment is in the shape of a large box with high walls, appearing more like a rectangular basin.
- the pan 24 may have other configurations, such as being wide and flat, or other shapes, as may be desired for accommodating a frame or cooking unit assembly configuration.
- the filter pan 24 in the embodiment of FIG. 3 is shown supported by a filter pan base 26 resting on casters.
- the front casters 28 are located to the front of the cooking assembly (that is, the portion of the assembly 10 facing a person who is frying food or adjusting the controls shown in FIG. 1 ).
- the rear casters 30 are located towards the back of the assembly 10 , where the brace 60 is shown in FIG. 2A and 2B .
- legs may be provided instead of casters.
- more or fewer casters may be used than the four shown.
- the filter pan 24 may be attached directly to the frame 18 , for example, by an axle passing through the front end of the filter pan 24 that is mounted to the frame 10 so that the filter pan 24 can tilt in the manner further described below.
- FIGS. 4A and 4B depict an alternative embodiment wherein the filter pan 24 has one or more tracks 46 on the exterior sides of the filter pan 24 , and the frame 10 has one or more corresponding sets of casters 48 positioned to roll along the underside or engage into the tracks 24 .
- This allows the filter pan 24 to be lifted off the ground and be supported by the frame 10 .
- This allows the frame and filter pan to be moved across the floor as a single integrated unit rather than as separate rolling units.
- FIG. 1 there is depicted a typical control panel and configuration for the filtration assembly 20 .
- the elements described herein concerning the control panel and valves, hoses, and pumps may or may not appear in the same manner or the same configuration in each specific assembly, based on the particular design set up for a given application.
- the process of cycling the cooking oil proceeds as follows.
- the discharge valve 38 is turned to permit oil flow as shown in FIG. 1 . If it is instead directed towards discharge, then the cooking oil will flow towards the discharge hose coupling 40 , to which a discharge hose (not shown) is connected, in order to remove the cooking oil complete for disposal. New oil would then be added to the cooking basin.
- the drain valve 34 is then opened. This drains the oil in the cooking basin to the filter pan 24 .
- the interior of the filter pan 24 includes filter paper for filtering oil prior to be being recycled for use.
- the filter pan 24 may be removable from the frame 18 for cleaning the interior basin of the pan.
- valves depicted in FIG. 1 and described above are shown as manual valves, in other embodiments the valves may be automatically controlled in connection with the control panel and processor, for example, by using a motorized valve or solenoid.
- the filter pan 24 has a filter hose 68 coupled to the bottom of the filter pan for draining the filter pan when opened.
- the filter hose 68 proceeds along the underside of the filter pan 24 toward the front of the filter pan, as shown in FIG. 3 , and then extends upward to the main panel for the filtration assembly, as shown in FIG. 1 .
- the filter hose 68 connects to the filter hose 68 coupling 32 .
- the pump 22 may operate automatically once the return valve 36 is opened, or the pump 22 may be operated separately, such as by pressing a button. In some embodiments, the return valve 36 and pump 22 may be operated in combination by pressing a single button on the control panel that indicates to return oil to the cooking basin.
- the oil filter pan is often only large enough to hold oil from one cooking basin, and therefore, the need arises to ensure that the filter pan is thoroughly emptied before oil in another basin is filtered. In addition, if the filter pan is removed to be cleaned, the user must ensure that the pan is replaced. Otherwise, opening the drain valve 38 will cause oil to be drained onto the floor.
- FIG. 5 depicts an embodiment of a sensor assembly 50 .
- a load cell 62 is mounted to the underside of the brace 60 .
- the brace is shown in profile in FIG. 5 but seen more clearly in FIG. 2A and 2B .
- a bracket 52 is also attached to the underside of the brace 60 .
- the bracket 52 has a fulcrum 54 , about which an attached lever 56 rotates.
- One end of the lever 56 extends underneath and contacts the load cell 62 .
- the other end of the lever 56 is attached to a roller 58 .
- the roller 58 is positioned underneath or alongside the filter pan 24 .
- the roller may be replaced by a bumper or plastic glide.
- the lever may engage the filter pan directly.
- the filter pan 24 is configured such that when it is empty, the back end of the filter pan 24 is supported by the roller 58 . If the filter pan 24 has a support base 26 or rear casters 30 , these are elevated slightly off the ground, such that the weight of the filter pan 24 is supported by the roller 58 and lever 56 . The application of the filter pan's weight on that end of the lever 56 causes the other end of the lever to press against the load cell 62 . Ultimately, the force of the weight of the filter pan 24 is transferred through the lever 56 and load cell 62 onto the frame 18 . The load cell 62 determines that a force is being applied to it and registers to the central processing unit the reading of the force.
- This information may displayed or communicated back to the user in a number of ways, such as by a display showing the weight of the pan 24 , or a light indicating that the filter pan 24 is in place.
- the drain valve 34 could be restricted from opening under certain conditions. For example, if the load cell 62 does not return a reading indicating that the filter pan 24 is in place, the drain valve 34 could be locked in place. Alternatively, if the load cell 62 indicated that the filter pan 24 was full or otherwise had a volume or weight of oil above a defined threshold, the drain valve 34 could be locked in place. In these instances wherein the load cell returns a condition that would necessitate keeping the drain valve 34 closed, the valve could remain closed by a number of mechanisms.
- an electromagnet (not shown) could be activated that holds the ball of the drain valve 34 in a locked position until the triggering condition is resolved.
- a motorized valve or electric solenoid could be used to govern the opening or closing of the drain valve or other valves 34 .
- Other mechanisms known in the art for restricting the drain valve 34 could also be used.
- the front end of the filter pan 24 is fixed.
- the rear end will depress slightly onto the roller 58 and lever 56 , causing the oil to gather towards the rear of the pan 24 .
- This directs the weight of the oil onto the rear end of the filter pan 24 , thereby causing an increased force to be transferred through the lever 56 to the load cell 62 .
- the load cell 62 determines the weight of the oil and transmits this data to the central processing unit of the control panel. Again, this information can then be communicated to the user, such as by a display showing the increased weight of the filter pan 24 , or a light or other device indicating the weight or fullness of the pan 24 .
- the load cell 62 reading indicates that the pan 24 is full of oil, it may lock the user from turning another drain valve connected to a different cooking basin in order to prevent filter pan 24 from overflowing, such as by the mechanisms described above.
- FIG. 5 also depicts a shoe 42 attached to the lower read edge of the filter pan 24 .
- the shoe 42 provides a surface for the end of the lever 56 or the roller 58 to engage on the filter pan 24 and provide additional surface area to reduce the chance of the filter pan 24 slipping off the lever 56 or roller 58 .
- the angled shoe 42 also provides a slight misalignment between the filter pan 24 and the roller 58 , such that the shoe 42 will engage the rollers 58 even if the filter pan 24 is not perfectly aligned with the rollers 58 when it is inserted into place.
- the shoe 42 is also depicted in FIGS. 2A and 2B .
- the shoe 42 may further include cut-outs 44 such that the roller 58 or lever 56 lodges in the cut-outs as the filter pan 24 tilts downward, thereby further reducing the chance of slippage.
- the shoe 42 may also extend beyond the edge of the filter pan 24 , as shown, and may have a bended profile to further support the filter pan 24 should it slip forward a short distance.
- FIG. 5 also depicts an adjustment screw 64 for positioning the roller 58 or lever 56 end underneath the filter pan 24
- an adjustment screw 64 for positioning the roller 58 or lever 56 end underneath the filter pan 24
- tightening the screw would cause the roller 58 to adjust downward, while loosening the adjustment screw 64 would adjust the roller 58 upward.
- FIG. 5 also depicts a spring 66 provided to help balance the weight of the lever 56 and roller 58 and to keep the lever pressed against the adjustment screw 64 .
- the spring could 66 could also be on the opposite side of the fulcrum 54 and be in a tensile state rather than a compressive state.
- the filter pan oil level sensor provided herein has several advantages over the prior art. First, it avoids the need for a sensor to be placed in the oil itself, which will eventually become covered in unfiltered used oil and need to be replaced. Second, the cantilevered design removes the load cell from being directly underneath the filter pan. This eases the user's ability to remove and clean the pan and reduces the amount of weight directed on the load cell. It also places the load cell in a more protected location to prevent damage to the load cell.
- any given elements of the disclosed embodiments of the invention may be embodied in a single structure, a single step, a single substance, or the like.
- a given element of the disclosed embodiment may be embodied in multiple structures, steps, substances, or the like.
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- Engineering & Computer Science (AREA)
- Food Science & Technology (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Frying-Pans Or Fryers (AREA)
- Cookers (AREA)
Abstract
Description
- This application claims the benefit of filing of U.S. Provisional Patent Application No. 62/820,733 filed on Mar. 19, 2019, which is incorporated herein by reference.
- The apparatus disclosed herein is directed to the technical field of fryers for cooking food and related cooking apparatuses. More particularly, the invention is directed to an apparatus and method for determining the oil level in a filter pan.
- Commercial cooking devices such as fryers that operate with cooking oil may have several frying or cooking bays that share a filtration system for cleaning and recirculating oil. Oil may only be filtered and recirculated a finite number of times before the oil quality is too degraded for further use. The oil may then be dumped to a filter pan for removal. In commercial cooking equipment, there is typically only one filter pan for several cooking or frying bays. Therefore, it is necessary to remove and dump the filter pan oil. This may cause two problems. First, the filter pan may be full of oil, such that when a user dumps oil from another bay, the filter pan overflows and causes oil to spill out. Second, the filter pan may not be properly replaced after the user has dumped the oil previously present. Once again, this may cause oil to spill out.
- What is needed, then, is a sensor system for notifying the user when the oil filter pan is full or not present so that the user does not dump oil in a manner causing a spill.
- In some respects the invention is directed to an apparatus for measuring an amount of oil present in a filter pan pivotable about a first end of the pan, wherein the apparatus has a fulcrum affixed to a frame and a load cell affixed to the frame, and a lever pivotable about the fulcrum, having a first end and a second end, wherein the first end of the lever supports a second end of the oil filter pan, and the second end of the lever urges against the load cell.
- In other respects the invention is directed to a method for measuring an amount of oil in a filter pan having the steps of gathering the amount of oil in the filter pan such that the filter pan tilts downward on a first side; depressing a first end of a lever that engages the first side of the filter pan; urging a second end of the lever against a load cell to obtain a reading; and notifying a user the filter pan is full, based on the reading of the load cell.
-
FIG. 1 depicts a cooking unit assembly and associated control assembly. -
FIGS. 2A and 2B depict perspectives of a frame including a filter pan. -
FIG. 3 depicts a perspective view of a filter pan with an inset view of a shoe attached to the filter pan. -
FIGS. 4A and 4B depict an alternative embodiment of a filter pan and frame. -
FIG. 5 depicts a profile view of a load cell and assembly. -
FIG. 1 depicts a front view of acooking unit assembly 10 of fryers having afilter pan 24 andfiltration assembly 20. Cooking units, including but not limited to fryers, often have oil filtration systems or assemblies for re-using cooking oil that could support an oil level sensor of the type described herein. Accordingly, the oil filter sensor mechanism as disclosed herein is not limited to fryers specifically or to cooking products generally. Nevertheless, for purposes of providing a specific utility environment, the apparatus is described with respect to fryers. - The
assembly 10 has aframe 18. Theframe 18 provides the frying basins that contain oil and also supports the fryers as wells as related electrical, mechanical, and fluid assemblies. As shown inFIG. 1 , theframe 18 supports a bank offryer baskets 12 suspended over basins maintained within arack 14 mounted to the top of theframe 14. Other elements may be included for operating or ventilating the fryers, such as acontrol system 16 or a hood above the fryers (not shown). Theframe 18 also supports afiltration assembly 20 as further described herein. -
FIGS. 2A and 2B show different perspectives of an embodiment of theframe 18 with the various electrical wires and fluid hoses removed for ease of viewing. Theframe 18 as depicted inFIGS. 2A and 2B is mounted on casters for ease in moving thecooking unit assembly 10 to a desired location. Afilter pump 22 is provided for pumping the oil through the filtration assembly. Afilter pan 24 is shown at the bottom of theframe 18. In the embodiment shown inFIGS. 2A and 2B , thefilter pan 24 is set on its ownfront casters 28 andrear casters 30. To the rear of thefilter pan 24 is abrace 60, below which is thesensor assembly 50 as described more fully herein. -
FIG. 3 depicts thefilter pan 24 in isolation. Thefilter pan 24 in this embodiment is in the shape of a large box with high walls, appearing more like a rectangular basin. Thepan 24 may have other configurations, such as being wide and flat, or other shapes, as may be desired for accommodating a frame or cooking unit assembly configuration. - The
filter pan 24 in the embodiment ofFIG. 3 is shown supported by afilter pan base 26 resting on casters. Thefront casters 28 are located to the front of the cooking assembly (that is, the portion of theassembly 10 facing a person who is frying food or adjusting the controls shown inFIG. 1 ). Therear casters 30 are located towards the back of theassembly 10, where thebrace 60 is shown inFIG. 2A and 2B . In other embodiments, legs may be provided instead of casters. Alternatively, more or fewer casters may be used than the four shown. In still other embodiments, thefilter pan 24 may be attached directly to theframe 18, for example, by an axle passing through the front end of thefilter pan 24 that is mounted to theframe 10 so that thefilter pan 24 can tilt in the manner further described below. -
FIGS. 4A and 4B depict an alternative embodiment wherein thefilter pan 24 has one ormore tracks 46 on the exterior sides of thefilter pan 24, and theframe 10 has one or more corresponding sets ofcasters 48 positioned to roll along the underside or engage into thetracks 24. This allows thefilter pan 24 to be lifted off the ground and be supported by theframe 10. This allows the frame and filter pan to be moved across the floor as a single integrated unit rather than as separate rolling units. - Returning to
FIG. 1 , there is depicted a typical control panel and configuration for thefiltration assembly 20. The elements described herein concerning the control panel and valves, hoses, and pumps may or may not appear in the same manner or the same configuration in each specific assembly, based on the particular design set up for a given application. - Using the configuration depicted in
FIG. 1 , the process of cycling the cooking oil proceeds as follows. When the discharge valve 38 is turned to permit oil flow as shown inFIG. 1 . If it is instead directed towards discharge, then the cooking oil will flow towards thedischarge hose coupling 40, to which a discharge hose (not shown) is connected, in order to remove the cooking oil complete for disposal. New oil would then be added to the cooking basin. With the discharge valve 38 directed towards “oil return,” thedrain valve 34 is then opened. This drains the oil in the cooking basin to thefilter pan 24. The interior of thefilter pan 24 includes filter paper for filtering oil prior to be being recycled for use. Thefilter pan 24 may be removable from theframe 18 for cleaning the interior basin of the pan. - While the valves depicted in
FIG. 1 and described above are shown as manual valves, in other embodiments the valves may be automatically controlled in connection with the control panel and processor, for example, by using a motorized valve or solenoid. - The
filter pan 24 has afilter hose 68 coupled to the bottom of the filter pan for draining the filter pan when opened. Thefilter hose 68 proceeds along the underside of thefilter pan 24 toward the front of the filter pan, as shown inFIG. 3 , and then extends upward to the main panel for the filtration assembly, as shown inFIG. 1 . Thefilter hose 68 connects to thefilter hose 68coupling 32. When thereturn valve 36 is opened, the oil may be pumped back to the cooking basin by thefilter pump 22. Thepump 22 may operate automatically once thereturn valve 36 is opened, or thepump 22 may be operated separately, such as by pressing a button. In some embodiments, thereturn valve 36 and pump 22 may be operated in combination by pressing a single button on the control panel that indicates to return oil to the cooking basin. - The oil filter pan is often only large enough to hold oil from one cooking basin, and therefore, the need arises to ensure that the filter pan is thoroughly emptied before oil in another basin is filtered. In addition, if the filter pan is removed to be cleaned, the user must ensure that the pan is replaced. Otherwise, opening the drain valve 38 will cause oil to be drained onto the floor.
- To address these issues, a sensor is provided to determine the presence of the pan and the amount of oil in the pan.
FIG. 5 depicts an embodiment of asensor assembly 50. Aload cell 62 is mounted to the underside of thebrace 60. The brace is shown in profile inFIG. 5 but seen more clearly inFIG. 2A and 2B . Between theload cell 50 and the filter pan 24 abracket 52 is also attached to the underside of thebrace 60. Thebracket 52 has a fulcrum 54, about which an attachedlever 56 rotates. One end of thelever 56 extends underneath and contacts theload cell 62. The other end of thelever 56 is attached to aroller 58. Theroller 58 is positioned underneath or alongside thefilter pan 24. In other embodiments, the roller may be replaced by a bumper or plastic glide. In still other embodiments, the lever may engage the filter pan directly. - The
filter pan 24 is configured such that when it is empty, the back end of thefilter pan 24 is supported by theroller 58. If thefilter pan 24 has asupport base 26 orrear casters 30, these are elevated slightly off the ground, such that the weight of thefilter pan 24 is supported by theroller 58 andlever 56. The application of the filter pan's weight on that end of thelever 56 causes the other end of the lever to press against theload cell 62. Ultimately, the force of the weight of thefilter pan 24 is transferred through thelever 56 andload cell 62 onto theframe 18. Theload cell 62 determines that a force is being applied to it and registers to the central processing unit the reading of the force. This information may displayed or communicated back to the user in a number of ways, such as by a display showing the weight of thepan 24, or a light indicating that thefilter pan 24 is in place. In addition, thedrain valve 34 could be restricted from opening under certain conditions. For example, if theload cell 62 does not return a reading indicating that thefilter pan 24 is in place, thedrain valve 34 could be locked in place. Alternatively, if theload cell 62 indicated that thefilter pan 24 was full or otherwise had a volume or weight of oil above a defined threshold, thedrain valve 34 could be locked in place. In these instances wherein the load cell returns a condition that would necessitate keeping thedrain valve 34 closed, the valve could remain closed by a number of mechanisms. For example, an electromagnet (not shown) could be activated that holds the ball of thedrain valve 34 in a locked position until the triggering condition is resolved. Alternatively, a motorized valve or electric solenoid could be used to govern the opening or closing of the drain valve orother valves 34. Other mechanisms known in the art for restricting thedrain valve 34 could also be used. - As set forth above, the front end of the
filter pan 24 is fixed. Thus, as thefilter pan 24 fills with oil, the rear end will depress slightly onto theroller 58 andlever 56, causing the oil to gather towards the rear of thepan 24. This directs the weight of the oil onto the rear end of thefilter pan 24, thereby causing an increased force to be transferred through thelever 56 to theload cell 62. Theload cell 62 determines the weight of the oil and transmits this data to the central processing unit of the control panel. Again, this information can then be communicated to the user, such as by a display showing the increased weight of thefilter pan 24, or a light or other device indicating the weight or fullness of thepan 24. In some embodiments, when theload cell 62 reading indicates that thepan 24 is full of oil, it may lock the user from turning another drain valve connected to a different cooking basin in order to preventfilter pan 24 from overflowing, such as by the mechanisms described above. -
FIG. 5 also depicts ashoe 42 attached to the lower read edge of thefilter pan 24. Theshoe 42 provides a surface for the end of thelever 56 or theroller 58 to engage on thefilter pan 24 and provide additional surface area to reduce the chance of thefilter pan 24 slipping off thelever 56 orroller 58. Theangled shoe 42 also provides a slight misalignment between thefilter pan 24 and theroller 58, such that theshoe 42 will engage therollers 58 even if thefilter pan 24 is not perfectly aligned with therollers 58 when it is inserted into place. Theshoe 42 is also depicted inFIGS. 2A and 2B . As shown therein, theshoe 42 may further include cut-outs 44 such that theroller 58 or lever 56 lodges in the cut-outs as thefilter pan 24 tilts downward, thereby further reducing the chance of slippage. Theshoe 42 may also extend beyond the edge of thefilter pan 24, as shown, and may have a bended profile to further support thefilter pan 24 should it slip forward a short distance. -
FIG. 5 also depicts anadjustment screw 64 for positioning theroller 58 orlever 56 end underneath thefilter pan 24 In the configuration shown with theadjustment screw 64 on the same side of the fulcrum 54 as thefilter pan 24, tightening the screw would cause theroller 58 to adjust downward, while loosening theadjustment screw 64 would adjust theroller 58 upward. -
FIG. 5 also depicts aspring 66 provided to help balance the weight of thelever 56 androller 58 and to keep the lever pressed against theadjustment screw 64. The spring could 66 could also be on the opposite side of thefulcrum 54 and be in a tensile state rather than a compressive state. - The filter pan oil level sensor provided herein has several advantages over the prior art. First, it avoids the need for a sensor to be placed in the oil itself, which will eventually become covered in unfiltered used oil and need to be replaced. Second, the cantilevered design removes the load cell from being directly underneath the filter pan. This eases the user's ability to remove and clean the pan and reduces the amount of weight directed on the load cell. It also places the load cell in a more protected location to prevent damage to the load cell.
- It is to be understood that any given elements of the disclosed embodiments of the invention may be embodied in a single structure, a single step, a single substance, or the like. Similarly, a given element of the disclosed embodiment may be embodied in multiple structures, steps, substances, or the like.
- The foregoing description illustrates and describes the processes, machines, manufactures, compositions of matter, and other teachings of the present disclosure. Additionally, the disclosure shows and describes only certain embodiments of the processes, machines, manufactures, compositions of matter, and other teachings disclosed, but, as mentioned above, it is to be understood that the teachings of the present disclosure are capable of use in various other combinations, modifications, and environments and are capable of changes or modifications within the scope of the teachings as expressed herein, commensurate with the skill and/or knowledge of a person having ordinary skill in the relevant art. The embodiments described hereinabove are further intended to explain certain best modes known of practicing the processes, machines, manufactures, compositions of matter, and other teachings of the present disclosure and to enable others skilled in the art to utilize the teachings of the present disclosure in such, or other, embodiments and with the various modifications required by the particular applications or uses. Accordingly, the processes, machines, manufactures, compositions of matter, and other teachings of the present disclosure are not intended to limit the exact embodiments and examples disclosed herein. Any section headings herein are provided only for consistency with the suggestions of 37 C.F.R. § 1.77 or otherwise to provide organizational queues. These headings shall not limit or characterize the invention(s) set forth herein.
Claims (10)
Priority Applications (1)
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US17/478,549 US12013276B2 (en) | 2019-03-19 | 2021-09-17 | Filter pan oil level sensor |
Applications Claiming Priority (3)
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US201962820733P | 2019-03-19 | 2019-03-19 | |
PCT/US2020/023662 WO2020191211A1 (en) | 2019-03-19 | 2020-03-19 | Filter pan oil level sensor |
US17/478,549 US12013276B2 (en) | 2019-03-19 | 2021-09-17 | Filter pan oil level sensor |
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PCT/US2020/023662 Continuation WO2020191211A1 (en) | 2019-03-19 | 2020-03-19 | Filter pan oil level sensor |
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US20220018700A1 true US20220018700A1 (en) | 2022-01-20 |
US12013276B2 US12013276B2 (en) | 2024-06-18 |
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US17/478,549 Active 2041-03-02 US12013276B2 (en) | 2019-03-19 | 2021-09-17 | Filter pan oil level sensor |
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US (1) | US12013276B2 (en) |
CN (1) | CN114173621A (en) |
BR (1) | BR112021018432A2 (en) |
CA (1) | CA3136932A1 (en) |
MX (1) | MX2021011318A (en) |
WO (1) | WO2020191211A1 (en) |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH09203656A (en) * | 1996-01-24 | 1997-08-05 | Yazaki Corp | Measuring apparatus for residue in tank |
US5776530A (en) * | 1995-06-01 | 1998-07-07 | The Frymaster Corporation | Deep fat frying apparatus with automated oil management and methods |
US20020174778A1 (en) * | 2001-05-25 | 2002-11-28 | Petrusha Joseph A. | System for automated removal of waste cooking oil from fryer vats |
WO2010020009A1 (en) * | 2008-08-22 | 2010-02-25 | Nickoloas Mitropoulos | A mobile material transfer system for delivery and receiving of solid and liquid material or combinations thereof |
US20160109887A1 (en) * | 2013-08-30 | 2016-04-21 | Frontline International, Inc. | Oil handling and monitoring device and system |
Family Cites Families (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB459195A (en) * | 1935-08-14 | 1937-01-04 | Transp Engineering & Equipment | Improvements in or relating to platform weighing machines |
US5297142A (en) | 1991-07-18 | 1994-03-22 | Motorola, Inc. | Data transfer method and apparatus for communication between a peripheral and a master |
JPH0854933A (en) | 1994-08-11 | 1996-02-27 | Lion Power Kk | Liquid level controller |
US5942269A (en) | 1997-12-19 | 1999-08-24 | Henny Penny Corporation | Method for manipulating cooking medium during cooking operations |
US6254790B1 (en) | 1998-04-21 | 2001-07-03 | Henny Penny Corporation | Method for filtering suspended materials from cooking substances |
CH695135A5 (en) * | 2001-02-09 | 2005-12-30 | Restaura Technology S A | French fries dispenser comprises a cooling chamber, a fryer, a tablet removing conveying unit, a French fries ejection unit, forks, sauces, salt, a coin collecting unit and an optical display |
US6378420B1 (en) * | 2001-03-30 | 2002-04-30 | Pitco Frialator, Inc. | Filter system for a deep fat fryer |
GB2386686A (en) * | 2002-03-20 | 2003-09-24 | Cargill Inc | Oil delivery and collection system |
KR20040105145A (en) * | 2003-06-05 | 2004-12-14 | 삼성전자주식회사 | Cooking apparatus having weight measuring device |
KR200354215Y1 (en) | 2004-04-09 | 2004-06-23 | 유길수 | Apparatus for recovering used edible oil |
EP1824364A4 (en) * | 2004-12-17 | 2008-08-13 | Frymaster Corp L L C | Multiple fryer types in unitary cabinet |
US8689679B2 (en) | 2006-11-27 | 2014-04-08 | Henny Penny Corporation | Automatic cooking medium level control systems and methods |
US7885521B2 (en) * | 2007-03-01 | 2011-02-08 | Restaurant Technology, Inc. | Automated fryer filtration device and method |
JP2010531997A (en) * | 2007-06-28 | 2010-09-30 | フライマスター エル.エル.シー. | Oil quality sensor and oil heater for deep fryer equipment |
FR2931941B1 (en) * | 2008-06-02 | 2011-03-25 | Renault Sas | DEVICE FOR ASSISTING THE WEIGHTING OF A FILTER USING A BALANCE. |
AT13547U1 (en) | 2012-10-17 | 2014-03-15 | Golden Faith Handels & Beteiligungs Kg | Device for collecting used cooking oil |
CA2956445A1 (en) * | 2014-08-01 | 2016-02-04 | Frymaster L.L.C. | Method and apparatus for a cooking oil quality sensor |
-
2020
- 2020-03-19 WO PCT/US2020/023662 patent/WO2020191211A1/en active Application Filing
- 2020-03-19 CN CN202080037068.0A patent/CN114173621A/en active Pending
- 2020-03-19 BR BR112021018432A patent/BR112021018432A2/en unknown
- 2020-03-19 CA CA3136932A patent/CA3136932A1/en active Pending
- 2020-03-19 MX MX2021011318A patent/MX2021011318A/en unknown
-
2021
- 2021-09-17 US US17/478,549 patent/US12013276B2/en active Active
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5776530A (en) * | 1995-06-01 | 1998-07-07 | The Frymaster Corporation | Deep fat frying apparatus with automated oil management and methods |
JPH09203656A (en) * | 1996-01-24 | 1997-08-05 | Yazaki Corp | Measuring apparatus for residue in tank |
US20020174778A1 (en) * | 2001-05-25 | 2002-11-28 | Petrusha Joseph A. | System for automated removal of waste cooking oil from fryer vats |
WO2010020009A1 (en) * | 2008-08-22 | 2010-02-25 | Nickoloas Mitropoulos | A mobile material transfer system for delivery and receiving of solid and liquid material or combinations thereof |
US20110168282A1 (en) * | 2008-08-22 | 2011-07-14 | Nickolaos Mitropoulos | Mobile material transfer system for delivery and receiving of solid and liquid material or combinations thereof |
US20160109887A1 (en) * | 2013-08-30 | 2016-04-21 | Frontline International, Inc. | Oil handling and monitoring device and system |
Also Published As
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US12013276B2 (en) | 2024-06-18 |
MX2021011318A (en) | 2021-11-12 |
BR112021018432A2 (en) | 2022-03-03 |
WO2020191211A1 (en) | 2020-09-24 |
CA3136932A1 (en) | 2020-09-24 |
CN114173621A (en) | 2022-03-11 |
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